hey,
interesting project you're working on!

I do not have any link to official documentation, but I'll try and find them.
I've been riding/club racing at Shanghai TIANMA, here's what I know about the records on this little circuit:
1. urban legend: a 16 yo Japanese rider on a 125cc GP bike supposedly owns the record at 1:00.xx
2. CSBK record belongs to Huang Shi Zhao (former 250GP rider) on an R6, 1:04.xx

Ok, I know these figures won't help much but hopefully they're better than nothing.

Cheers,
Nic